DS56-L490-001 Ver la hoja de datos (PDF) - Conexant Systems

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DS56-L490-001

V.90/K56flex™ PC Card Device Sets for Host-Controlled, Low Power Applications

Conexant Systems 

HCFL/56

V.90/K56flex PC Card Device Sets for Host-Controlled, Low Power Applications

The 512-byte CIS table physically resides in the

L5502-11 PCMCIA BIF. The CIS table provides the

host with PC Card specific information including card

type, address range decoding capability, and control

requirements to complete host link establishment

with the PC Card.

Supported interface signals to the Function 2

controller are chip select (~CH2CS), power down

(~PWRDWN2), reset (~RESOUT2), disable

EEPROM (~DISEEP), A0 data bit (A0OUT), and 16-

bit data select (~IO16E). An interrupt input (~IREQ2)

from the Function 2 controller is also supported.

Address inputs (HA0-HA15) and bi-directional data

bus lines (HD0-HD7) from the PC Card Connector

connect directly to the Function 2 controller to

support data transfer between the Function 2

controller and the host. In addition, host read

(~IORD), host write (~IOWR), chip select (~CE2),

and I/O channel ready (IOCHRDY) signals connect

directly from the PC Card Connector to the Function

2 controller.]

Hardware Interfaces

NVRAM (Serial EEPROM) Interface

A 2-line serial interface to an optional, non-volatile

RAM is supported. The interface signals are a bi-

directional data line (NVMDATA) and a clock output

line (NVMCLK). Data stored in NVRAM can take

precedence over the factory default settings. A 256-

byte NVRAM can store up to two user-selectable

configurations and up to four 32-digit dial strings for

PSTN/GSTN operation. A 2048-byte NVRAM can

also store the 512-byte CIS table (optional). The CIS

table can be changed by downloading the modified

CIS information to the NVRAM.

Telephone Line Interface

L5502-11 PCMCIA BIF. Wireline operation is

selected when a DAA interface is indicated on the

DAA/CELL input or when a cellular interface is

indicated on the DAA/CELL input but no analog

cellular driver is loaded.

Relay control outputs to the line interface are

supported:

• ~RLY1: Off-hook (~OH) (~RLY1)

• ~RLY2: Voice (~VOICE) or Pulse (~PULSE)

• ~RLY3: Mute (~MUTE)

• ~RLY4: Caller ID (~CALLID) if needed. The DAAs

shown in Figure 2 and Figure 3 support the Caller

ID function without use of a separate relay.

Ring signal (RINGD) and loop current sense (LCS)

inputs are also supported.

MDP. A single-ended receive analog input (RIN) and

a differential transmit analog output (TXA1/TXA2)

are supported. A digitized speaker output (SPKMD)

is provided for call progress monitoring.

Analog Cellular Phone

L5502-11 PCMCIA BIF. Analog cellular operation is

selected when a cellular interface is indicated on the

DAA/CELL input and a cellular driver is loaded.

Signals supported are two encoded control outputs

(CTRL0 and CTRL1), a bi-directional serial data line

(CELDATA), a data clock input (CELCLK), a cellular

busy output (CELBSY), and a cellular busy input

(~CELBSY).

MDP. A single-ended receive analog input (RIN) and

a differential transmit analog output (TXA1 and

TXA2) are supported.

External Bus Interface

The non-multiplexed external bus supports eight bi-

directional data lines (D0-D7) and 10 address output

lines (A0-A9). Read enable output (~READ) and

write enable output (~WRITE) lines are also

supported.

Speakerphone Interface (S Models)

Microphone input (MICV) and a speaker output

(SPKM) lines connect to handset, headset, or a

microphone and speaker to support functions such

as headset and speakerphone modes, FDSP,

telephone emulation, microphone voice record,

speaker voice playback, and call progress monitor.

The speaker output (SPKM) carries the normal

speakerphone audio or reflects the received analog

signals in the modem.

An input from the telephone microphone (TELIN) and

an output to the telephone speaker (TELOUT) are

supported. These lines connect voice

record/playback and audio to the local handset.

8

Conexant

Doc. No. 100586C

Proprietary Information

November 10, 1999

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